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anterior_visual_pathway

Anterior visual pathway

The anterior visual pathway (AVP) (i.e., retina, optic nerves, chiasm, and optic tracts).

The anterior visual pathway refers to structures involved in vision before the lateral geniculate nucleus. The posterior visual pathway refers to structures after this point.

Isolated primary central nervous system lymphoma arising from anterior visual pathway is very rare.

A 76-year-old immunocompetent previously healthy man presented bilateral decreased visual acuity in 1 month. Pituitary magnetic resonans imaging (MRI) showed a lobulated mass with homogeneous enhancement after gadolinium administration that arising from optic chiasm suggested that inflammatory disease or an optic glioma. The patient underwent an extended endoscopic endonasal transsphenoidal surgery. Postoperative course and outcomes were wonderful. Histopathological diagnosis was diffuse large B-cell lymphoma. The patient underwent investigations for systemic lymphomatous involvement, did not detect any evidence of systemic disease.

In this case, we claimed that differential diagnoses of anterior visual pathway lesions are difficult because of similarity of lesions on clinical and radiological examinations. Biopsy is essential for these lesions. As a biopsy technique, endoscopic endonasal transsphenoidal approach is safer and more effective than open procedures 1).

1)
Ozdemir ES, Yildirim AE, Can AY. Primary Central Nervous System Lymphoma of Optic Chiasma: Endoscopic Endonasal Treatment. J Craniofac Surg. 2017 Oct 23. doi: 10.1097/SCS.0000000000004059. [Epub ahead of print] PubMed PMID: 29065048.
anterior_visual_pathway.txt · Last modified: 2017/10/26 13:08 by administrador